JP2009107682A - Filling apparatus for packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filling apparatus for a packaging machine which suppresses a while up phenomenon of an article to be packaged at the time of filling by compressing the article to be packaged in a funnel and filling it into a packaging bag under a small bulk condition, and attempts to perform speed-up of a filling operation. <P>SOLUTION: A lower slide 22 fitted with the funnel 23 and an upper slide 38 fitted with a pushing rod 39 for pressing the article to be packaged fed in the funnel are provided so as to be elevated and lowered on respective guide bars 20 arranged correspondingly to respective processes on a rotary table 15 provided so as to move a plurality of the processes synchronized with a rotor 4 of the packaging machine. In the funnel 23, a pair of opening/closing pieces 25 and 31 for opening and closing a discharging outlet are provided so as to oscillate on the lower end part of a funnel body. A cam follower 33 on the opening/closing piece 31 side is engaged to a cam channel 27 on the opening/closing piece 25 side, and both opening/closing pieces are provided so as to close to a bill-like shape by a coil spring 35, and both opening/closing pieces 25 and 31 are opened by a cooperative operation of the cam follower 33 and the cam channel 27 by moving a roller 28 of the opening/closing piece 25 by an air pressure cylinder 42. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a filling device of a packaging machine that automatically fills a packaging bag in a state of being compacted and compacted to be packaged such as a light and easy-to-roll shaving.

  An example of a method for compressing and filling an object to be packaged in a conventional gas filling type packaging machine is shown in FIG. In this method, a predetermined amount of covering is applied with the bottom end of the funnel c facing the bag mouth b of the packaging bag a supported in a suspended manner by a grip pair (not shown) of the packaging machine. The package f is put into the funnel, and then the package bag a is filled while the package f is pushed by the push rod d. About the processing capacity by this compression filling method, it is 15-18 bags per minute.

However, if the packaged item is light and bulky like a shaving node, it is filled while being pushed by the push rod d and expels air contained in the shaving node in the packaging bag, so the shaving node soars and jumps out. Or may adhere to the inner surface of the bag mouth. In addition, in the state where the packaged item is bulky in the packaging bag, the packaged product rises when inserting the nozzle into the packaging bag and injecting the inert gas in the subsequent process of the packaging process, and gas filling work Cause trouble.

The present applicant has developed a push-in device that compresses a packaged article such as a shaving joint placed in a packaging bag with a push rod so as to deal with such a problem (utility model registration No. 2520262). However, when the pushing operation is also accelerated by the pushing device, the packaged material rises and becomes unsettled, so that the pushing operation cannot be made too fast.
Utility Model Registration No. 2520262

  It is an object of the present invention to suppress the rising phenomenon of a packaged item at the time of filling by compressing the packaged item in a funnel and filling the packaged bag into a small bulk, thereby speeding up the filling operation. It is to provide a filling device for a machine.

In order to achieve the above object, the invention described in claim 1 is such that a moving body having one or a plurality of grip pairs is intermittently stopped in a large number of steps and supported in a suspended manner by each grip pair. In a filling device of a packaging machine configured to fill a packing bag with a predetermined amount of compressible packaging by a filling device,
The filling device is provided with a rotary table attached to a longitudinal intermittent rotary shaft so as to rotate and move in a plurality of steps in synchronization with the moving body of the packaging machine, and arranged on the rotary table corresponding to each step. Each guide bar is provided with a lower slide to which a funnel is attached and an upper slide to which a push rod that presses an object to be packaged is placed in the funnel so that it can be raised and lowered. A pair of opening and closing pieces for opening and closing the discharge port is swingably provided in the part, and a pin provided on the other opening and closing piece is engaged with a cam groove provided on one opening and closing piece, and any opening and closing piece and the funnel Both the open / close pieces are closed like a hook by the elastic force of the spring mounted between the main body, and on the other hand, a part of one of the open / close pieces is moved by an actuator to link the pin and the cam groove. In Provided to open both the opening and closing piece I,
Between the post-filling process and the filling process of the packaged object, the packaged object accommodated in the funnel is compressed by the lifting and lowering operation of the push rod to reduce the bulk,
The lower end portion of the funnel is inserted into the bag mouth of the packaging bag intermittently stopped in the filling step by the operation of the lifting means, and at the same time, the opening / closing piece of the funnel is opened by the operation of the actuator to make the packaged material small. It is characterized by being provided so as to be filled by being pushed by a push rod.

  According to the filling device of this packaging machine, since the packaged material put into the funnel and accommodated is compressed into a small volume and filled into the packaging bag, the processing capacity is improved from the conventional 15-18 bags per minute. The speed is improved to about 30 bags per minute, and the filling operation can be speeded up. Furthermore, since the compression filling is performed, the rising phenomenon of the package can be suppressed as much as possible, and a smaller packaging bag than the conventional one can be used.

  The best mode of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a packaging machine to which a filling apparatus according to the present invention is applied, FIG. 2 is a side view of the same, FIG. 3 is an explanatory view of the main part of the filling apparatus, and FIG. ) To (c), FIG. 5 is a plan view of the funnel, FIG. 6 is a development view of the lower slide cam and the upper slide cam, and FIG. 7 shows the relative positional relationship between the funnel and the push rod throughout the entire process. FIG. 8 is an explanatory view showing the operation of the funnel opening and closing piece in correspondence with the packaging bag.

FIG. 1 shows a rotary type gas filling type packaging machine P to which a filling device 10 for a packaging machine according to the present invention is applied. This packaging machine P includes a bag feeding process (1), a printing process (2) such as an expiration date, a packaging bag opening process (3), a filling process (4) of an article to be packaged such as a shaving knot, and a pushing process (5). , Nozzle insertion and bag mouth temporary sealing process (6), gas replacement / brushing process (7) to (12), top sealing process (14), sealing part cooling process (15), product removal process (16), etc. It consists of 16 steps.
In addition, about the to-be-packaged goods handled in this Example, it is a "shaving node" of the property that it is bulky and light and tends to rise.

  As shown in FIG. 2, on the machine base 1 of this packaging machine P, the stand 3 which supported the intermittent rotating shaft 2 of the vertical direction freely rotatably is provided. The disc-shaped rotating body 4 attached to the intermittent rotating shaft 2 is used to hold or release the packaging bags a supplied one by one from the bag feeding device 6 in the bag feeding step (1) (step). Sixteen grip pairs g (the same number as the number) are provided so as to protrude radially at equal angular intervals.

  In this embodiment, the apparatus according to the present invention is applied to a rotary type packaging machine P, but it is also possible to apply it to a linear movement type packaging machine.

  The filling device 10 includes an input process (21) of an article to be packaged (cutting joint) from a measuring means (not shown) into the funnel, a process (22) in which an external pushing device and the like can be installed, In the case of a malfunction, it consists of eight steps of the outside discharge step (23), the pushing step (24), the filling step (25), and the idle steps (26) to (28) when discharging the object to be packaged by the measuring means.

  A stand 11 installed on the machine base 1 is provided with a vertically extending hollow intermittent rotating shaft 13 via a bearing (not shown) so as to freely rotate (FIG. 3). The annular rotary table 15 attached to the flange 13a of the intermittent rotary shaft 13 is synchronized with the rotary body 4 by a known driving means (not shown) constituted by an index device and a gear, and in this case, there are eight steps. These steps are provided so as to move intermittently. Reference numeral 18 denotes a central shaft arranged concentrically inside the intermittent rotation shaft 13. A fixed table 19 attached to the tip of the middle shaft 18 is fixed to an upper end surface of a support member 17 provided to be rotatable relative to the intermittent rotation shaft 13.

  As shown in FIG. 3, a pair of guide bars 20 are arranged on the outer peripheral edge of the turntable 15 so as to correspond to each process, and a lower slide 22 having a funnel 23 attached to each guide bar 20 and a push The upper slide 38 to which the rod 39 is attached is provided as a set so as to be movable up and down. The upper end of each guide bar 20 is connected by a ring plate 21 so as not to wobble. Further, the push rod 39 is provided for a shaving node accommodated in the funnel 23, and a substantially cylindrical block 40 is attached to the lower end of the push rod 39 (FIG. 7).

  Each funnel 23 is provided with a pair of bowl-shaped opening and closing pieces 25 and 31 for opening and closing the discharge port 23d. Specifically, as shown in FIG. 4, a pair of opening and closing pieces 25 and 31 are provided at the lower end portion 23 c of the funnel body 23 b so as to be swingable by pins 24 and 30, respectively. A cam plate 26 fixed to the upper side surface of one opening / closing piece 25 is formed with a gently convex arc-shaped cam groove 27, and a roller 28 is attached to the upper position of the opening / closing piece 25 sideways. A pin or cam follower 33 is attached to the support piece 32 fixed to the upper side surface of the other opening / closing piece 31 so that the cam follower 33 is engaged with the cam groove 27. A coil spring (spring) 35 is mounted between the cam plate 26 of the opening / closing piece 25 and the funnel body 23b, and the opening / closing pieces 25, 31 are always attached in a bowl shape by the elastic force of the coil spring 35. Provide to support. Reference numeral 36 denotes a stopper that abuts the upper end portion of the cam plate 26, and reference numeral 37 denotes a stopper that abuts the upper end portion of the support piece 32.

  A funnel pneumatic cylinder 42 as an actuator attached by a bracket 41 is provided at a position corresponding to the out-of-system discharge step (23) and the filling step (25) on the flange 11a of the stand 11 (FIG. 1). The rod of the pneumatic cylinder 42 is provided with a pressing plate 43 that presses the roller 28 of the opening / closing piece 25. Accordingly, when the roller 28 is pressed by the pressing plate 43 by the operation of the pneumatic cylinder 42, both the opening and closing pieces 25, 31 are opened by the linked operation of the cam follower 33 and the cam groove 27.

  As shown in FIG. 6, the fixed table 19 is provided with a lower slide cam 45 on the lower side and an upper slide cam 50 on the upper side so as to have a vertical cylindrical cam shape. With respect to the lower slide cam 45, the upper cam plates 46a and 47a and the lower cam plates 46b and 47b are arranged such that a cam groove 48 having a constant width is formed. Similarly, in the upper slide cam 50, the upper cam plates 51a, 52a, and 53a and the lower cam plates 51b, 52b, and 53b are arranged so that a cam groove 54 having a constant width is formed. The pin 22a (or cam follower) provided on the back side of the lower slide 22 is provided in the cam groove 48, and the pin 38a (or cam follower) provided in the upper slide 38 is provided in the cam groove 54 so as to be engageable.

  The lower slide cam 45 is not provided in the charging step (21) and the filling step (25). Further, the upper slide cam 50 is not provided in the out-of-system discharge step (23) and the filling step (25).

  On the fixed table 19, a first lifting / lowering means that allows the lower slide 22 to be raised and lowered in the loading step (21) of the package object, and the upper slide 38 in the system discharge step (23) that is a step before the filling step. In the filling step (25), a second lifting means 55 that allows the upper slide 38 to move up and down and a fourth lifting means 70 that allows the lower slide 22 to move up and down are installed. .

  As shown in FIG. 3, the third elevating means 55 is slidably mounted on a pair of guide bars 56 erected on the outer peripheral edge of the fixed table 19, and protrudes from the front surface of the slider 59. The support piece 60 is provided so that the pin 38a of the upper slide 38 can be supported. The upper end of the guide bar 56 is connected to the ring plate 57.

  The frame 61 installed on the fixed table 19 is provided with a servo motor device 65 that vertically arranges pulleys 62 and 63 so as to freely rotate in the vertical direction and drive and rotate one pulley 62. A rear portion 59 b of the slider 59 is attached to the timing belt 64 that is stretched between the pulleys 62 and 63. Thus, the third raising / lowering means 55 is configured to allow the slider 59 to be raised and lowered by driving and rotating the pulley 62 by the servo motor device 65.

  As for the fourth elevating means 70, a slider 71 is slidably mounted on the guide bar 56, and a pin 22a of the lower slide 22 is provided so as to be supported by a support piece 72 protruding from the front surface of the slider 71. Yes. The frame 61 is provided with a servo motor device 77 that vertically arranges pulleys 73 and 74 so as to freely rotate in the vertical direction and drive and rotate one pulley 73. A rear portion 71 b of the slider 71 is attached to the timing belt 75 that spans between the pulleys 73 and 74. Thus, the fourth elevating means 70 is configured to move the slider 71 by driving and rotating the pulley 73 by the servo motor device 77 so that the funnel 23 can be raised and lowered.

  Since the first lifting means has the same structure as the fourth lifting means 70 described above, description of the structure is omitted. Further, since the second lifting and lowering means has the same structure as the third lifting and lowering means 55, the description of the structure is omitted.

As shown in FIG. 6, the cam groove 48 of the lower slide cam 45 has a substantially chevron shape, and is formed at the highest position in the pushing step (24). In the pushing step (24), the funnel 23 is raised by the linkage action of the lower slide cam 45 and the lower slide 22, so that the shavings accommodated in the funnel 23 can be compressed.
Thus, the filling device 10 for a packaging machine according to the present invention is configured.

Next, the operation of the filling device 10 of the packaging machine according to the present invention will be described.
(1) In the loading step (21) of the article to be packaged, the funnel 23 is raised in the state in which the upper opening 23a of the funnel 23 is raised by the operation of the first elevating means until it comes close to the discharge port (not shown) of the weighing means. 100 to 150 g of shaving node is put into the (Fig. 7).
(2) In the out-of-system discharge step (23), the push rod 39 is pushed a plurality of times by the operation of the second lifting / lowering means, thereby compressing the shaving node in the funnel 23 to reduce the bulk to about 1/3 to 1/5. . When a signal indicating that the packaging bag is not gripped by the n-th grip pair g is input from the control unit of the packaging machine P to the control unit of the compression filling device 10, the charging process is performed accordingly. The shaving node input in (21) is discharged out of the system (FIG. 7).
(3) In the filling step (25), the lower end portion 23c of the funnel 23 is inserted into the bag mouth b of the packaging bag a intermittently stopped on the packaging machine side by the linkage action of the third elevating means 55 and the fourth elevating means 70. . As shown in FIG. 8, the roller 28 is pressed by the operation of the funnel pneumatic cylinder 42 in synchronism with the insertion operation of the funnel 23, so that the opening and closing pieces 25 and 31 are opened, and the shaving node reduced in volume is a push rod. It is pushed in by 39 and filled.
(4) Next, when the push bar 39 is pushed once more, the shaving node in the packaging bag a is compressed and the bulk becomes small.
(5) When the shaving node is filled in the packaging bag a, the push rod 39 and the funnel 23 are raised to the original standby position in this order (FIG. 7), the rod of the funnel pneumatic cylinder 42 is retracted and the spring of the coil spring 35 is retracted. The opening and closing pieces 25 and 31 of the funnel 23 are closed in the original bowl shape by the generated force.
Thereafter, the series of actions (1) to (5) is repeated, so that the scraping nodes are sequentially filled in the packaging bag a that is intermittently sent to the filling step (25).

  As described above, the filling device of this packaging machine fills the packaging bag in a state of being compressed into a small volume and compresses the material to be packaged that has been put into the funnel and accommodated therein. It has the advantage that it can be improved from ˜18 bags to about 30 bags per minute, and the filling operation can be speeded up.

The top view of the packaging machine to which the filling device concerning the present invention is applied Same side view Explanatory drawing of the main part of the filling device Explanatory drawing (a)-(c) of the principal part of a funnel Top view of funnel Exploded view of lower and upper slide cams Explanatory drawing showing the relative positional relationship between the funnel and the push rod throughout the entire process Explanatory drawing showing the operation of the opening and closing piece of the funnel corresponding to the packaging bag Explanatory drawing of filling work by conventional packing means

Explanation of symbols

P ... Gas filling type packaging machine g ... Grip pair a ... Packaging bag b ... Bag opening 10 ... Filling device 13 of packaging machine according to the present invention ... Intermittent rotating shaft 15 ... Rotating table 19 ... fixed table 20 ... guide bar 22 ... lower slide 23 ... funnel 25, 31 ... opening / closing piece 27 ... cam groove 33 ... cam follower (pin)
35 ... Coil spring (spring)
38 ... Upper slide 39 ... Push bar 42 ... Pneumatic cylinder (actuator) for funnel

Claims (1)

A movable body having one or many grip pairs is intermittently stopped and moved in a number of steps, and a predetermined amount of a compressible package is placed in a packaging bag supported in a suspended manner by each grip pair by a filling device. In the filling device of the packaging machine configured to fill,
The filling device is provided with a rotary table attached to a longitudinal intermittent rotary shaft so as to rotate and move in a plurality of steps in synchronization with the moving body of the packaging machine, and arranged on the rotary table corresponding to each step. Each guide bar is provided with a lower slide to which a funnel is attached and an upper slide to which a push rod that presses an object to be packaged is placed in the funnel so that it can be raised and lowered. A pair of opening and closing pieces for opening and closing the discharge port is swingably provided in the part, and a pin provided on the other opening and closing piece is engaged with a cam groove provided on one opening and closing piece, and any opening and closing piece and the funnel Both the open / close pieces are closed like a hook by the elastic force of the spring mounted between the main body, and on the other hand, a part of one of the open / close pieces is moved by an actuator to link the pin and the cam groove. In Provided to open both the opening and closing piece I,
Between the post-filling process and the filling process of the packaged object, the packaged object accommodated in the funnel is compressed by the lifting and lowering operation of the push rod to reduce the bulk,
The lower end portion of the funnel is inserted into the bag mouth of the packaging bag intermittently stopped in the filling step by the operation of the lifting means, and at the same time, the opening / closing piece of the funnel is opened by the operation of the actuator to make the packaged material small. A filling device for a packaging machine, which is provided so as to be filled by being pushed in by a push rod.

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